180(n-2)=n*144 in our case
solving for n we obtain:
36n = 360
n=10 sides
Divide I think divide them together
Answer:
Step-by-step explanation:
Since the diameter is 2.1 then its radius is 1.05.
Therefore the circumference is
.
Answer:
Cone: 100ft^3
Sphere: 200ft^2
Step-by-step explanation:
Firstly, the volume of a cone is 1/3 of the volume of the cylinder. It's literally in the formula:

So we can just instantly tell that the volume of the cone is 100feet^3.
Not for the sphere - we can assume that if the height is the same, it's equal to two radiuses, or simply - to the diameter. Let's use the formula for the volume of a sphere, but substitute one of the radiuses with 

So we can instantly tell that the volume of the sphere is 200feet^3